Characteristics of Virtualized Environm Virtual Reference model Characteristics

Characteristics of Virtualized Environm

Virtual Reference model

Characteristics of Virtualized Solutions �Increased Security The ability to control the execution of a guest in a completely transparent manner opens new possibilities for delivering a secure, controlled execution environment. The virtual machine represents an emulated environment in which the guest is executed. All the operations of the guest are generally performed against the virtual machine, which then translates and applies them to the host.

� Managed Execution Virtualization of the execution environment does not only allow increased security but a wider range of features can be implemented. In particular, sharing, aggregation, emulation, and isolation are the most relevant.

TAXONOMY of virtualization Techniques

Pros and Cons of Virtualization �Virtualization has now become extremely popular and is largely used, especially in Cloud computing. The primary reason of its wide success is the elimination of technology barriers that made virtualization not an effective and viable solution in the past. The most relevant barrier has been performance.

Advantages of Virtualization �Managed execution and isolation are perhaps the most important advantages of virtualization. In the case of techniques supporting the Creation of virtualized execution environment, these two characteristics allow building secure and controllable computing environments.

�Portability is another advantage of virtualization, especially for execution virtualization techniques. Virtual machine instances are normally represented by one or more files that can be easily transported with respect to physical systems.

Disadvantages �Performance degradation �Inefficiency and Degraded user experience �Security holes and new Threats